Combustion engine



Nov. M, H939. F. WEHINGER 2,179,769

COMBUSTION ENGINE Filed March 2s, 1957 NVENTOR.

Patented Nov. 14, 1939 l UNITED STATES PATENT OFFICE Application March 23,

1937, Serial No. 132,564

In Germany March 28, 1936 3 Claims.

My invention relates to a wabble-plate which converts the reciprocatory movement of the pistons into a rotary motion of the shaft. The connection between the piston and the wabble plate is made by a slide, fitted to the pin of a guidecase, connected to the piston.

Reference is to be had to th-e accompanying drawing in which,

Fig. l shows a section through the combustion engine,

Fig. 2 shows a section through the wabble plate and their connections,

Figs. 3 and 4 show the different sections of the connecting plate driven by the wabble plate,

Fig. 5 shows a partial section according to line I-I of Fig. 2.

Figs. 6 and '1 show the arrangement for changing the stroke.

According to Figs. l and 2 the wabble plate 22 is fixed to the shaft 28. The connecting plate 23 is placed around the wabble plate 22 and rests on ball bearings. The connecting plate 23 has slots 29, 30, 58, 82 which serve as guides for the slides 24, 25, 59, 85. The slides rest on the balls 28, 8l, 51, 80 of the different pins 21, which are fastened to the guide cases 4I, 42. The guide cases 4I, 42 are connected to the pistons 2, 3, 4, 5 by the rods 54. The cylinders and their piston form the combustion chambers 8, 1, 8, 9, the chambers for the gas mixture Ill, II, I2, I3, the cleaning chambers I4, I5, I8, I1, I8, I9, 28, 2| for air. The cylinders are placed inside of the case I.

The working of the wabble plate will bedescribed according to Figs. 1-5.

The connecting plate 23, driven forward and backward by the explosions of the cylinders, makes the wabble plate 22 rotate. As the slide 25 is surrounded by the four walls of the slot 29 40 tightly and as the slide 25 is fixed to the case 82 which is guided in a straight line backward and forward, the upper part of the connecting plate 23 with the slot 29 makes also a straight motion backward and forward. But as known 45 the parts of the connecting plate 23 with the slots 58 and 82 make also a forward and backward motion but at the same time they make a corresponding small upward and down motion. For instance any point of the part, which 50 encloses the slot 58 describes the path of an eight (w) going backward and forward. Therefore as the slides 59, 85 go backward and forward in a straight line, the slots 58, 82 must be Open on two sides in relation to sufficient play for the slides 85, 59. Now it is a fact that all slides are guided backward and forward in an exact straight line, also the upper part of the connecting plate 23 shows a straight motion, while the other parts make a combined motion. For instance the slot 58 moves somewhat up and 5 down in direction of the arrows (Fig. 2), when going backward and forward, while the slide 85 moves backward and forward in a straight line. Therefore the slot 58 must be open on top and bottom. It is important that the connecting plate 23 does not show any movable connections, which could exert severe complicated accelerations of the weights in relation to the combined movement of the diierent parts.

Figs. 6 and 7 show the arrangement for changing the stroke.

If in Fig. 2 the pin of the ball 8| would be placed into the holes 83, the stroke of the piston would be increased and if the pin of the ball 8I would be placed into the holes 90, the stroke of the pistons would be decreased. Instead of placing the pin of the ball 8| into the different holes 83, 98, the pin 86 of the ball 81, Fig. 6, carrying the slide 88, isfixed to the eccentric 84 with the shaft 89.

The eccentric 84, shown in the position of Fig. 6, exerts the same stroke as if the pin of ball 8l is placed into the holes 83, 90.

If the eccentric 84 is turned 180 and is kept in this position by an arrester, which is not shown, the stroke would be decreased and it would be the same as if the pin of the ball 8| would be placed into the holes 90.

A larger stroke increases the compression and therefore the speed of the motor is increased too. A smaller stroke decreases the compression and therefore the speed of the motor is decreased too.

I claim:

1. A wabble plate of a combustion engine, rotating inside of a connecting plate, which is free of any moving parts and which is fitted with slots, slides attached to balls, fitted to guidecases, moved backward and forward in a straight line and which are connected to the pistons, the slides fitted into the slots of the connecting plate.

2. A wabble plate of a combustion engine, rotating inside of a connecting plate, which is free of any moving parts and which is fitted with slots, slides attached to balls, fitted to guidecases, moved backward and forward in a straight line and which are connected to the pistons, the slides fitted into the slots of the connecting plate, one slide surrounded by four walls of the 55 corresponding slot of the connecting plate tightly, the other slots surrounded by only two Walls of the corresponding slots of the connecting plate tightly.

3. A wabble plate of a combustion engine, rotating inside of a connecting plate, which is free of any moving parts and which is fitted with slots, slides attached to balls, tted to guidecases, moved backward and forward in a straight line and which are connected to the pistons, the slides fitted into the slots of the connecting plate, one slide surrounded by four Walls of the corresponding slot of the connecting plate tightly, the other slots surrounded by only two walls of the corresponding slots of the connecting plate tightly, a device arranged for shifting the slides for the purpose of changing the stroke.

FRITZ WEHINGER. 

